Java tutorial
/* * The MIT License (MIT) * * Copyright (c) 2016. Diorite (by Bartomiej Mazur (aka GotoFinal)) * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package org.diorite.chat.component; import java.util.ArrayList; import java.util.Arrays; import java.util.regex.Matcher; import java.util.regex.Pattern; import org.apache.commons.lang3.builder.ToStringBuilder; import org.apache.commons.lang3.builder.ToStringStyle; import org.diorite.chat.ChatColor; /** * Represent simple text chat component. */ public class TextComponent extends BaseComponent { private static final Pattern url = Pattern.compile("^(?:(https?)://)?([-\\w_\\.]{2,}\\.[a-z]{2,4})(/\\S*)?$"); private String text; /** * Construct new TextComponent with given string. * * @param text string to use. */ public TextComponent(final String text) { this.text = text; } /** * Construct new TextComponent as copy of given one. * * @param textComponent component to copy. */ public TextComponent(final TextComponent textComponent) { super(textComponent); this.text = textComponent.getText(); } /** * Construct new TextComponent with given extra components and text set to empty string. * * @param extras extra components to use. */ public TextComponent(final BaseComponent... extras) { this.text = ""; this.setExtra(Arrays.asList(extras)); } /** * Construct new TextComponent with given string and extra components. * * @param text string to use. * @param extras extra components to use. */ public TextComponent(final String text, final BaseComponent... extras) { this.text = text; this.setExtra(Arrays.asList(extras)); } /** * Construct new empty TextComponent. */ public TextComponent() { } /** * Returns text of this component. * * @return text of this component. */ public String getText() { return this.text; } /** * Set text of this component. * * @param text new text of this component. */ public void setText(final String text) { this.text = text; } @Override public int replace_(final String text, final BaseComponent component, int limit) { final int startIndex = this.text.indexOf(text); if (startIndex != -1) { final int endIndex = startIndex + text.length(); final String pre = this.text.substring(0, startIndex); final String post = this.text.substring(endIndex); this.text = pre; if (this.extra != null) { this.extra.addAll(0, Arrays.asList(component.duplicate(), new TextComponent(post))); } else { this.extra = new ArrayList<>(2); this.extra.add(component.duplicate()); this.extra.add(new TextComponent(post)); } if (--limit == 0) { return 0; } } return super.replace_(text, component, limit); } @Override public int replace_(final String text, final String repl, int limit) { final int startIndex = this.text.indexOf(text); if (startIndex != -1) { final int endIndex = startIndex + text.length(); this.text = this.text.substring(0, startIndex) + repl + this.text.substring(endIndex); if (--limit == 0) { return 0; } } return super.replace_(text, repl, limit); } @Override protected void toPlainText(final StringBuilder builder) { builder.append(this.text); super.toPlainText(builder); } @Override protected void toLegacyText(final StringBuilder builder) { this.addFormat(builder); if (this.text != null) { builder.append(this.text); } super.toLegacyText(builder); } @Override public BaseComponent duplicate() { return new TextComponent(this); } @Override public String toString() { return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE).appendSuper(super.toString()) .append("text", this.text).toString(); } /** * Join given array of components into one big {@link TextComponent} * * @param components array of components to join. * * @return one big {@link TextComponent} containing all given elements. */ public static TextComponent join(final BaseComponent... components) { if ((components == null) || (components.length == 0)) { return new TextComponent(""); } if (components.length == 1) { if (components[0] instanceof TextComponent) { return (TextComponent) components[0]; } return (components[0] == null) ? new TextComponent("") : new TextComponent(components[0]); } final TextComponent base = new TextComponent(); for (int i = 0, componentsLength = components.length; i < componentsLength; i++) { final BaseComponent component = components[i]; if (component == null) { continue; } if ((i + 1) < componentsLength) { component.addExtra("\n"); } base.addExtra(component); } return base; } /** * Create new BaseComponent from legacy minecraft chat message. * * @param message legacy message. * * @return equals BaseComponent for given message. */ public static BaseComponent fromLegacyText(final String message) { final TextComponent base = new TextComponent(""); StringBuilder builder = new StringBuilder(); TextComponent component = new TextComponent(); final Matcher matcher = url.matcher(message); for (int i = 0; i < message.length(); i++) { char c = message.charAt(i); if (c == ChatColor.COLOR_CHAR) { i++; c = message.charAt(i); if ((c >= 'A') && (c <= 'Z')) { //noinspection MagicNumber c += 32; } ChatColor format = ChatColor.getByChar(c); if (format == null) { continue; } if (builder.length() > 0) { final TextComponent old = component; component = new TextComponent(old); old.setText(builder.toString()); builder = new StringBuilder(); base.addExtra(old); } switch (format) { case BOLD: component.setBold(true); break; case ITALIC: component.setItalic(true); break; case UNDERLINE: component.setUnderlined(true); break; case STRIKETHROUGH: component.setStrikethrough(true); break; case MAGIC: component.setObfuscated(true); break; case RESET: format = ChatColor.WHITE; default: component = new TextComponent(); component.setColor(format); break; } continue; } int pos = message.indexOf(' ', i); if (pos == -1) { pos = message.length(); } if (matcher.region(i, pos).find()) { //Web link handling if (builder.length() > 0) { final TextComponent old = component; component = new TextComponent(old); old.setText(builder.toString()); builder = new StringBuilder(); base.addExtra(old); } final TextComponent old = component; component = new TextComponent(old); final String urlString = message.substring(i, pos); component.setText(urlString); component.setClickEvent(new ClickEvent(ClickEvent.Action.OPEN_URL, urlString.startsWith("http") ? urlString : ("http://" + urlString))); base.addExtra(component); i += pos - i - 1; component = old; continue; } builder.append(c); } if (builder.length() > 0) { component.setText(builder.toString()); base.addExtra(component); } return base; } }